Phosphate Formula

Phosphate formula, also known as Phosphate ion formula or Orthophosphate formula, is given in this article. This salt of phosphoric acid has one central phosphorus atom which is surrounded by four oxygen atoms in a tetrahedral shape. A phosphate salt is obtained when a positively charged ion gets attached to the oxygen atoms that are negatively charged and forms an ionic compound. It is commonly found in the form of AMP, ADP, ATP, DNA, and RNA.

At standard temperature and pressure, most of the phosphates are insoluble in water. The sodium, rubidium, ammonium phosphates, potassium, and caesium are all water-soluble whereas the others are either slightly soluble or completely insoluble in water.

Aqueous phosphate occurs in four types:

  • The phosphate ion predominates in strongly basic solutions.
  • The hydrogen phosphate ion is common in weakly basic conditions.
  • The dihydrogen phosphate ion is most common in weakly acidic conditions.
  • The trihydrogen phosphate is the main form in strongly acidic conditions.

Phosphate Formula Structure

Phosphate Formula

Properties Of Phosphate Formula

The empirical formula of phosphate is PO43−. It is a polyatomic ion with a molecular mass 94.9714 g/mol. Phosphates can be grouped as:

(1) Primary phosphates – crystallized from liquid;

(2) Secondary phosphates – generated from the modification of primary phosphates.

(3) Fine-grained rock phosphates – obtained from phosphorus-bearing organic material, at formed at low temperatures.

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